Question on a .308 barrel

So i have this Yugo M48BO that I am in the process of re-working. Im looking at barrels right now, and want a .308 on it instead of a 8mm. ran across these guys and an "adjustable headspace barrel". not sure what to make of it. Any opinions?

"The barrels have full length chambers and use a lock ring to adjust headspace. "

I assume we are talking about a large ring here? I have no idea what kind of a lock ring device they are talking about. The factory barrel is threaded into the receiver. If you don't have a lathe, your best bet is to buy a short chambered barrel and finish ream.

Should be fine... I think they are loosely similar to a FAL barrel that you use those real thin washers to set headspace. Although looking at the pics the threaded area is longer for lock ring. The ring is going to be just in front of the receiver so fitting with whatever stock / handguard / gastube gizmos might be in the way and require additional fitting. Arguably a small problem however.

As I understand it the barrel is supposed to tighten on the in a ring inside the receiver on a Mauser. A lock ring set up would tighten down on the face of the reciver. Id want some feed back on the Rhinelander set up before on how they shoot. the price is pretty cheap so id suspect the blank it is made from is not the best.

Remington and other rifles the barrel tighten down on the end of the receiver. I'm not sure a barrel nut set up on a Mauser receiver is ideal ? I emailed Rhinelander arms a few weeks ago about the possibility of just buying a small ring Mauser barrel nut I have not heard back.

Somebody must make a military step Barrel in 308.

edit
If I was looking for a military step replacement id consider this one if I had the cashLothar Walther

my understanding is Wilson barrels used to sell a 308 mil step barrel sold by brownels I see browlnels has discontinued them no back order.

there were a few mausers converted to 7.62x51. the Peruvians had a few, Spanish fr8, iim sure there were others. many countries rebarrled to them. you might find one some were .

I have been thinking of trying to make my own small ring set up with a barrel nut . mainly so it can be a easy switch barrel.

Look at the pic of it, they are using the Savage system. The bbl is screwed in as far as it will go and a headspace GO gauge is inserted. The bbl is backed out until the bolt locks, then the lockring threaded onto the bbl OD is tightened against the face of the receiver to secure it. If the receiver face is true, it should work fine although the factory Mausers were butted up against the inner stop ring of the receiver. Since we are talking probably a fraction of a turn between seated and proper headspace, I don't think there will be any problems.

So i have this Yugo M48BO that I am in the process of re-working. Im looking at barrels right now, and want a .308 on it instead of a 8mm. ran across these guys and an "adjustable headspace barrel". not sure what to make of it. Any opinions?